File Info
| Exam | Java SE 8 Programmer |
| Number | 1z0-808 |
| File Name | Oracle.1z0-808.Prep4Sure.2019-12-19.108q.vcex |
| Size | 9 MB |
| Posted | Dec 19, 2019 |
| Download | Oracle.1z0-808.Prep4Sure.2019-12-19.108q.vcex |
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Demo Questions
Question 1
Which statement is true about the switch statement?
- It must contain the default section.
- The break statement, at the end of each case block, is optional.
- Its case label literals can be changed at runtime.
- Its expression must evaluate to a collection of values.
Correct answer: B
Question 2
What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class?
- Encapsulation
- Inheritance
- Abstraction
- Instantiation
- Polymorphism
Correct answer: A
Explanation:
Using the private modifier is the main way that an object encapsulates itself and hide data from the outside world. Reference: http://www.tutorialspoint.com/java/java_access_modifiers.htm Using the private modifier is the main way that an object encapsulates itself and hide data from the outside world.
Reference: http://www.tutorialspoint.com/java/java_access_modifiers.htm
Question 3
Given the code fragment:
Which two modifications, made independently, enable the code to compile? (Choose two.)
- Make the method at line n1 public.
- Make the method at line n2 public.
- Make the method at line n3 public.
- Make the method at line n3 protected.
- Make the method at line n4 public.
Correct answer: CD
Question 4
Given:
What is the result?
- Compilation fails at line n1.
- InitializedStartedInitialized
- InitializedStarted
- Compilation fails at line n2.
Correct answer: D
Question 5
Given these two classes:
Any amount of electricity used by a customer (represented by an instance of the Customer class) must contribute to the customer's bill (represented by the member variable bill) through the useElectricity method.
An instance of the Customer class should never be able to tamper with or decrease the value of the member variable bill.
How should you write methods in the ElectricAccount class at line n1 so that the member variable bill is always equal to the value of the member variable kwh multiplied by the member variable rate?
Correct answer: A
Question 6
Given the code fragment:
Which option can replace xxx to enable the code to print 135?
Correct answer: B
Question 7
Which statement best describes encapsulation?
- Encapsulation ensures that classes can be designed so that only certain fields and methods of an object are accessible from other objects.
- Encapsulation ensures that classes can be designed so that their methods are inheritable.
- Encapsulation ensures that classes can be designed with some fields and methods declared as abstract.
- Encapsulation ensures that classes can be designed so that if a method has an argument MyType x, any subclass of MyType can be passed to that method.
Correct answer: A
Question 8
Given the code fragment from three files:
Which code fragment, when inserted at line 2, enables the code to compile?
- Option A
- Option B
- Option C
- Option D
- Option E
Correct answer: E
Question 9
Given this class:
And given this main method, located in another class:
Which three lines, when inserted independently at line n1, cause the program to print a 0 balance? (Choose three.)
- acct.setAmount(-acct.getAmount());
- acct.amount = 0; <option D earlier>
- acct.setAmount(0);
- acct.getAmount() = 0; <option E earlier>
- this.amount = 0; <option A earlier>
- acct.changeAmount(0); <option F earlier>
- acct.changeAmount(-acct.amount); <option G earlier>
Correct answer: BDF
Question 10
Given the code fragment:
Which code fragment prints red: blue: small: medium?
Correct answer: D
